Extracts from the financial statements of QTR Projects Limited for the year ended 31 December 2021 are provided below: Extract of the Statement of Comprehensive Income Sales (Credit) Cost of sales Gross profit Operating expenses Operating profit Interest expense Profit before tax Tax Profit after tax R 506 500 (250 000) 256 500 Non-current assets Current assets Trading inventory Debtors Bank (203 100) 53 400 (14 500) 39 100 (11 730) 27 370 Extract of the Statement of Financial Position R 50 000 30 000 2.000 R 300 000 82 000 382 000 Required: Calculate each of the following ratios and round off your answers to two (2) decimal places: Gross margin Debtors collection period Inventory turnover Acid-test ratio Interest coverage 1.1 1.2 1.3 1.4 1.5 I